Return to Earth From Space Home
Earth from Space logo Image Information Earth from Space logo

Display a Screen Layout for Printing

IMAGE: gray corner       IMAGE: gray corner
  Image: Geographic Location Direction Photo #: ISS017-E-18044 Date: Oct. 2008
Geographic Region: MEXICO
Feature: CORNONADO ISLAND, CURRENTS

Ordering information for space photography
 
IMAGE: gray corner     IMAGE: gray corner

Image: gray corner     Image: gray corner
  View Low-Resolution Image  
  Coronado Island and the Gulf of California, Mexico

Located in the Bahia de los Angeles—Bay of the Angels—Isla Coronado (Coronado Island, also known as “Smith Island” on some maps) sits in the Gulf of California, just off the eastern shoreline of Mexico. The island is approximately 7 km long, and is dominated by Volcan (volcano) Coronado on the northern end. The date of last eruption of the volcano is not known, but gas and steam activity was last recorded in 1539.

Coronado Island—together with nearby Isla Mitlan and Isla Calavera—has an arid climate and is sparsely vegetated. Despite the harshness of the environment, sea lion colonies can be found on the island, and the Bahia de los Angeles is a popular sport fishing location. Partly in response to increased environmental pressure on the islands from both fishing and tourism, local groups developed a management and conservation plan for the islands in the bay, with international support, in the late 1990s.

The island is an important piece of the ecology of the Gulf of California. In 1940, marine biologist Ed Ricketts, together with his friend, author John Steinbeck, conducted an expedition and collecting trip in the Sea of Cortez (now known as the Gulf of California) to explore the rich ecology of the intertidal zone. Coronado Island and the Bahia de los Angeles were part of that expedition. The resulting book by Steinbeck and Ricketts, Sea of Cortez, remains a classic document of the natural history and ecology of the Gulf of California. At the time, the marine environment around Coronado appeared to Ricketts and Steinbeck as sterile (in their words, “burned”) compared to the rest of the Gulf.

Today, the uninhabited island is a refuge with a rich marine assemblage, especially when compared to other unprotected parts of the Gulf. This image provides hints of the diverse marine environment around the island. Most of the coast is steep and rocky, but lighter blue lagoons, especially along the western coast, provide shallower, protected environments that are biologically robust. Offshore, internal waves and complex surface currents facilitate mixing of the water, important for nutrient delivery to the coastal environments. These features “observed as patterns in the water” are outlined by the sunglint (light reflecting off of the water surface back towards the camera onboard the International Space Station). The sunglint patterns are due to wind and currents, which roughen the water surface and enhance reflection, and surfactants that decrease the surface tension and roughness, resulting in regions of dark smooth water.
 
Image: gray corner     Image: gray corner

Images: All Available Images Low-Resolution 218k
Mission: ISS017  
Roll - Frame: E - 18044
Geographical Name: MEXICO  
Features: CORNONADO ISLAND, CURRENTS  
Center Lat x Lon: 29.1N x 113.5W
Film Exposure:   N=Normal exposure, U=Under exposed, O=Over exposed, F=out of Focus
Percentage of Cloud Cover-CLDP: 10
 
Camera: N2
 
Camera Tilt: 18   LO=Low Oblique, HO=High Oblique, NV=Near Vertical
Camera Focal Length: 800  
 
Nadir to Photo Center Direction: S   The direction from the nadir to the center point, N=North, S=South, E=East, W=West
Stereo?:   Y=Yes there is an adjacent picture of the same area, N=No there isn't
Orbit Number: 532  
 
Date: 20081001   YYYYMMDD
Time: 211501   GMT HHMMSS
Nadir Lat: 30.1N  
Latitude of suborbital point of spacecraft
Nadir Lon: 113.4W  
Longitude of suborbital point of spacecraft
Sun Azimuth: 224   Clockwise angle in degrees from north to the sun measured at the nadir point
Space Craft Altitude: 190   nautical miles
Sun Elevation: 47   Angle in degrees between the horizon and the sun, measured at the nadir point
Land Views: COAST, ISLAND, VOLCANO  
Water Views: BAY, GULF, SEA, SUNGLINT  
Atmosphere Views:  
Man Made Views:  
City Views:  
Photo is not associated with any sequences


NASA Human
Space Flight
NASA
Home Page
JSC
Home Page
NASA
Image eXchange
JSC Digital
Image Collection
Earth Sciences &
Image Analysis

One of our servers is down, causing Image Detective and requesting of original imagery to not work, as well as causing photos database queries to take longer than usual.